PSF-subtracted, wavelength-collapsed image of HD 100546 from IFS data, showing HD 100546 b (top left) and a second point-source-like feature that may be a bright disk rim or a candidate planet “HD 100546 c” (top right; image stretch multiplied by 10). HD 100546 b and “c” are about 5.5% and 9.4% as bright as the rms of the speckle halo+disk in the raw data, about a factor of 2–3 brighter relative to the halo noise than HR 8799 bcde in H-band extreme-AO data from Project 1640 (Oppenheimer et al. 2013). (bottom left) S/N map for the IFS image and (bottom right) the positions of the (candidate) protoplanets relative to disk material in a box-car smoothed (5 × 5 pixel) image.